how to convert column data as table header laravel [closed] - php

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hi forum how to convert created_at column as header table and synchronized it with title column.
this is my database
below is my blade code
<div class="container">
<table class="table table-striped">
<thead>
<tr>
<th>No</th>
<th>Name</th>
#foreach($users as $u=>$user)
#foreach($user->posts as $p)
<th>{{$p->created_at}}</th>
#endforeach
#endforeach
</tr>
</thead>
<tbody>
#foreach($users as $u=>$user)
<tr>
<td>{{$u+1}}</td>
<td>{{ $user->name }}</td>
#foreach($user->posts as $p)
<td>{{$p->title}}</td>
</tr>
#endforeach
</tbody>
</table>
</div>
this is my blade view
i have 2 table, user table and post table. a user could have many posts.
this is my post model
this is my user model
this my post controller
thank you.

Answer 1

You can collect all created_at in a new array with the help of #php directive and use 2 nested loops for comparison while displaying.
Run over all created_at and check if any of the post's timing matches. If yes, display the anchor tag and break out of the loop. If none of them matches, print an empty td.
<div class="container">
<table class="table table-striped">
<thead>
<tr>
<th>No</th>
<th>Name</th>
#php
$created_ats = []
#endphp
#foreach($users as $u => $user)
#foreach($user->posts as $p)
<th>{{ $p->created_at }}</th>
#php
$created_ats[] = $p->created_at
#endphp
#endforeach
#endforeach
</tr>
</thead>
<tbody>
#foreach($users as $u => $user)
<tr>
<td>{{$u+1}}</td>
<td>{{ $user->name }}</td>
#foreach($created_ats as $created_at)
#foreach($user->posts as $p)
#if($p->created_at == $created_at)
<td>{{$p->title}}</td>
#break
#endif
#if($loop->last)
<td></td>
#endif
#endforeach
#endforeach
</tr>
#endforeach
</tbody>
</table>
</div>
If you want dates in sorted format, collect all of them in your controller, usort them with the help of DateTime class and pass them to the view.
Controller code:
<?php
public function index(){
$users = User:all();
$created_ats = [];
foreach($users as $u=>$user){
foreach($user->posts as $p){
$created_ats[] = $p->created_at;
}
}
usort($created_ats,function($date1,$date2){
$date1 = \DateTime::createFromFormat('Y-m-d H:i:s', $date1);
$date2 = \DateTime::createFromFormat('Y-m-d H:i:s', $date2);
return $date1 <=> $date2; // needs PHP7 minimum
});
return view('posts.index',compact('users','created_ats'));
}
Blade:
<div class="container">
<table class="table table-striped">
<thead>
<tr>
<th>No</th>
<th>Name</th>
#foreach($created_ats as $created_at)
<th>{{ $created_at }}</th>
#endforeach
</tr>
</thead>
<tbody>
#foreach($users as $u => $user)
<tr>
<td>{{$u+1}}</td>
<td>{{ $user->name }}</td>
#foreach($created_ats as $created_at)
#foreach($user->posts as $p)
#if($p->created_at == $created_at)
<td>{{$p->title}}</td>
#break
#endif
#if($loop->last)
<td></td>
#endif
#endforeach
#endforeach
</tr>
#endforeach
</tbody>
</table>
</div>